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Compositional dependence of crystallization of As-Te glasses

Titus, SSK and Asokan, S and Gopal, ESR (1992) Compositional dependence of crystallization of As-Te glasses. In: Solid State Communications, 83 (9). pp. 745-747.

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Official URL: http://dx.doi.org/10.1016/0038-1098(92)90156-4

Abstract

Thermal crystallization studies have been carried out on bulk, semiconducting AsxTe100−x glasses of different compositions using Differential Scanning Caloritmery. AsxTe100−x glasses with x < 40, are found to exhibit one glass transition and one crystallization. On the other hand, glasses with composition 40 less-than-or-equals, slantxless-than-or-equals, slant 50 show one glass transition and two crystallization reactions. It has been found that in glasses with x greater-or-equal, slanted 40, the two crystallization reactions progressively merge with an increase in arsenic concentration. Consequently AsxTe100−x glasses with x greater-or-equal, slanted 50 show only one crystallization. The composition dependence of crystallization temperatures and activation energies for crystallization estimated by Kissinger's method, show marked deviations at a composition x = 40. These observations can be explained in terms of the changes in the local structure of the material with composition.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier science.
Department/Centre: Division of Physical & Mathematical Sciences > Instrumentation and Applied Physics (Formally ISU)
Division of Physical & Mathematical Sciences > Physics
Date Deposited: 25 Jan 2011 06:08
Last Modified: 25 Jan 2011 06:08
URI: http://eprints.iisc.ernet.in/id/eprint/35147

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